.header{
  margin-top: 60px;
  margin-left: 100px;
}
#adrs{
  margin: 0 10px;
}
.clear{
  content: "";
  display: block;
  clear: both;
}
#book{
  margin: 20px 0;
}

.zero{
  width: 60px;
  height: 35px;
  border-radius: 8px;
  display: inline-block;
  text-align: center;
  line-height: 35px;
}
#cor1{
  color: rgb(6,208,220);
  border: 1px solid rgb(6,208,220);
}
#cor2{
  color: rgb(55,124,247);
  border:1px solid rgb(55,124,247);
}
#cor3{
  color: rgb(255,0,0);
  border: 1px solid rgb(255,0,0);
}
#check{
  float: right;
}
#check>span:nth-child(2){
  width: 80px;
  height: 40px;
  display: inline-block;
  background-color: rgb(253,189,4);
  text-align: center;
  line-height: 40px;
  margin-left: 10px;
  border-radius: 8px;
}
#library{

  width: 800px;
  height: 300px;
  border: 1px solid yellow;
  margin-top: 50px;
}
#md{
  width: 100%;
  height: 300px;
  border: 1px solid red;
}
.ceng{
  font-size: 16px;
  font-weight: bold;
  color:rgb(253,189,4); 
  border-bottom: 2px solid rgb(253,189,4);
  width: 80px;
  height: 60px;
  line-height: 60px;
  text-align: center;
}
#one{
  margin:20px 0 10px 20px;
}
#one>span{
  margin-left: 10px;
}
#two{
  margin:0 30px ;
}
#two>span{
  margin-left: 10px;
}
#three{
  margin: 10px  40px;
}
#three>span{
  margin-left: 10px;
}
#four{
  margin: 10px 50px;
}
#four>span{
  margin-left: 10px;
}
#five{
  margin: 10px 60px;
}
#five>span{
  margin-left: 10px;
}
#six{
  margin-left: 30px;
}
#six>span{
  margin-left: 10px;
}